取得系統中所有系統參數名稱和內容

[code lang="java"]import java.util.*;

public class scjp {
public static void main(String[] args) {
Properties p = System.getProperties();
Enumeration<?> names = p.propertyNames();
while(names.hasMoreElements()) {
String name = (String)names.nextElement();
System.out.println(name + " = " + System.getProperty(name));
}
}
}[/code]
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